Tractor.



F- SCHMIDT. TRACTOR.

1,241,563 ATION m n was a. ma.

Patented Oct. 2. 1917.

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H. F. SCHMIDT.

TRACTOR.

APPLICATION FILED JUNE 3, 1916- L 1,241,563. Patented Oct. 2,1917.

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TRACTOR.

APPLICATION FILED JUNE 3.19m.

Patented 001;. 2, 1917.

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J 0 Nb 1 STATES PATENT OFFICE.

HUGO I. SCHMIDT, 0] CHICAGO, ILLINOIS.

TRACTOR.

1,241,563. Summation of Letter! Pmnt- Patented Oct. 2, 191 7.

Application fled lune 8, 1918. Serial No. 101,615.

To all whom it may concern: Fig. 2 is a bottom lan view.

Be it known that I, HUGO F. SCHMIDT, a citizen of the United States, residing in Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Tractors, of which the following is a specification.

This invention relates to improvements in tractors and similar machines, and more especially to improvements in the design and constriiction of the frames of tractors propelled by internal combustion engines to etter adapt them for the work which they are intended perform.

Heretofore gasolene and oil-driven tractors and similar 'machineshave been constructed with frames of various forms which have been copied more or less from other t of selfropelled vehicles, such as the or inary pleasure motor car, as automobile,

and the commercial motor car, or truck; althou h the condltlons of service in the frame ordinarily also being unaided by sup-'- porting springs between it and the driving wheels.

One of the objects therefore of the resent invention is to produce a frame whic shall possess the necessary strength and rigiditiys to transmit the power to the driving whee and to draw the required loads, without being afiected by the travel of the machine over rough and mean ground, through ditches and over obstacles, without dan r a of weakening through vibration from e engine and shocks and jolts from the ground, and without distortion, which would tend to throw the moving parts out of line and thus impair the eflicieney of the machine. v

A tractor frame embodym the principles of the present invention is s own in the 9.0-

1 is a view of the complete frame in si e elevation.

coiliii lpanying drawings, in which:

Fig. 3 is a longitu inal vertical section through the entire frame, taken on the line 3-3 of Fig. 4. 1

Fig. 4 is a top plan view of the complete frame.

Fig. 5 is a view showing the frame in front elevation.

Fig. 6 is a transverse vertical section on the line 6-6 of Fig. 3.

Fig. 7 is a similar section on the line 7-7 of Fig. 3.

As shown in said drawings the entire frame for the complete tractor, including the engine and the transmission gearing for transmitting the power to the driving wheels comprises one unitary structure, which, as here shown, is preferably made in three parts secured together by bolts and studs. The forward part 1 includes in one integral casting the engine ciylindershere shown as four in number, athough the number of cylinders might be varied without departing from the spirit of this invention-which cy inders are arran ed side by side in what is known as block form and are also cast integral with the upper half of the crankcase 2. This castin includes also the upper halves of the cran shaft journal boxes, 3, 4 and 5, respectively, of which the center journal 4, is supported by a web, 10, in the crank-case, journals for the cam-shaft 12, 12, and water-jacket spaces 15, 15 as will be understood by those who are familiar with the art; and its rear part is formed to provide the up er half 25 of a fiy-wheel housing. This Bitter part of the casting being wired to carry a considerable load, as

be seen hereinafter, there is also included in the castin and within the flywheel'housin a radial web 28 which joins the front via of the housing and extends from the rear crank-shaft bearin 5 to the upper wall of the housing; an over the top of the housing 25 there is formed a longitudinal, vertical web 30. The fly-wheel hous' 25 terminates in a circumferential flan e 1 by means of which it may be bolted the edges of the o 11 under side of the crank-case 2 is a wi e rectangular flan or shelf, 36, which occupies the position 0 the side and front frame members of an ordinary motor-car frame; the front edge of this flange bein designed to rest on the front axle, as in icated at 37.

The rear part 35 of the unitary frame structure is preferably formed by casting also, and is shaped to accommodate the necessary shafts and gearing comprising the mechanism for transmittin the power from the crank-shaft to the drlving wheels, as well as to provide a pair of journal boxes for carr ing its own weight and the weight of the orward part 1 upon the rear axle (not here shown). For this purpose, the

art 35 is formed at its rear part with l aterally extending tubular parts 40, 40 through which are journaled the rear axle of the machine, and forward of these and parallel with them are two similar, but shorter tubular arts 42, 42 in which may be journaled a jac -shaft (not shown) for rotating the driving wheels through chains or gearing as may be desired. As such ackshaft would ordinarily be divided through a differential gear and driven from its center part, there are also provided two journal boxes between the tubular such journal boxes being s own in Ifi 3 and comprising an upper half 43, who 1 18 supported in the .large casting 35 b webs 44 and 45, and a lower half 46 w ch as bolted to the upper half by bolts as shown. The other center journal box, not shown, is .substantially similar in all respects to that which is shown.

At the bottom of the rear wall 48 of the part 35, and in line with the rear crank-shaft journal 5, above described, there is formed the upper half 50 of a journal box for the main shaft in a sliding-gear-set, of well known form, and fo ard of it and in proper alinement with i and the journal 5 is the u per half 51 of the other journal box for such shaft; the part 51 beirg supported b an inte al transverse vertical wall 52 (l ig. 3) w ich is an inte a1 part. of the main casting. Above the ournal parts 50 and 51, and similarly arranged respectively in the rear wall 48 and the transverse wall 52 are another pair of journal boxes, 54 and 55, to support the counter-shaft of the gearset; and above the latter in turn are small journals or openings 59 60 through the same two walls for a shifting rod to shift the ears for the necessary gear-changes, as will 5e understood. The journal boxes 50 and 51 are completed by two inverted bearing caps 62 and 63 which are secured to the upper parts by bolts and are connected to each other by an oil-pan or grease-pan 66 so as to permit of independent lubrication of the moving parts in the gear-set.

The forward edge of the pait 35, which is semicylindric as viewed in transverse vertical section, is surrounded by a circumferenarts 42; ,one of tial flange 70 to bolt to the flan e 31, as shown; and joining the lower en s of this flange and in continuation of the flange 36, above described, is a corresponding horizontal flange 72 so that these two flanges above constitute in eflect a complete rectangular frame for the machine, or tractor, but depend upon other parts of the two castings, as above described, to reinforce and strengthen them throughout. In addition, there is provided a transverse horizontal flange or web, 75, extending rearwardly from the wall 48, between the two tubular parts 40; a pair of triangular horizontal flanges, 76, and a similar pair of vertical flanges 7 7 7 7 joining these tubular parts and the main body of the casting to reinforce the rear axle journals against horizontal and vertical stresses.

Along the top of the casting 35 is formed a longitudinal, vertical web or. flange 80, which is in effect a prolongation of the flange 30 on the engine part 1 of the frame structure, these two flan es thus forming a back-bone for the mac ine but the flan e through a part of its length is ma e double, to surround a rectanglular opening 83 which provides access to t e jack-shaft, and it terminates immediately forward of a second opening 84, providing access to the gear-set below. i

The third, or bottom part of the frame structure is made simply in the form of a large pan 90 extending substantially the full length of the entire frame structure and bolted to the under sides of both parts 1 and 35; thus joining all three parts together into one stron and rigid unitary frame structure for t e entiremachine, includin the engine, transmission gearing with a ackshaft, and a rear axle supported on dnving wheels. In the center part of the member 90 is made a large semi-cylindric depression to form the lower half of the fiy-wheel housmg, and in its forward part and below the engine cylinders there is made a large rectangular opening covered by a flat plate, 93, in which are made depressions, 94, 94, to provide oil wells for the engine cranks to dip into, as will be understood; and the plate 93 is made removable as shown to rovide access to the crank chamber without isturbing the large pan 90.

I claim as my invention:

' 1. In a tractor, or similar vehicle, a unitary frame structure divided horizontally, the upper half including the substantial part of an engine structure and a transmission gear housing, and the lower half bein made the upper half including the substantial part of an engine structure and a transmission gear housing secured rigidly together and adapted to rest on two axles, and the lower half being made in one piece joined to both parts of the upper half and extending substantially the entire length of the frame structure.

3. In a tractor, or similar vehicle, a unitary frame structure divided horizontally, the upper half being adapted to rest on two axles and providing journals for all moving parts, and the lower half bein made in one piece joined to the upper hal and extending substantially the entire length of the frame structure.

4. In a tractor or similar vehicle, a unitary frame structure providing journals for all moving parts and supported on two axles, such frame structure being divided horizontally throughout its entire length and the lower part being made in one piece from end to end.

In witness whereof, I have hereunto subscribed my name this first day of June 1916.

HUGO F. SCHMIDT. 

